JP2000215883A - Battery - Google Patents
BatteryInfo
- Publication number
- JP2000215883A JP2000215883A JP11018167A JP1816799A JP2000215883A JP 2000215883 A JP2000215883 A JP 2000215883A JP 11018167 A JP11018167 A JP 11018167A JP 1816799 A JP1816799 A JP 1816799A JP 2000215883 A JP2000215883 A JP 2000215883A
- Authority
- JP
- Japan
- Prior art keywords
- sheet material
- battery
- battery case
- electrolyte
- injection port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Filling, Topping-Up Batteries (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池ケース内に電
解液を注入するための注液口を注液栓で塞ぎ封口する非
水電解質電池等の電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery such as a non-aqueous electrolyte battery in which a liquid inlet for injecting an electrolytic solution into a battery case is sealed with a liquid stopper.
【０００２】[0002]
【従来の技術】電気自動車用の大型大容量の非水電解質
二次電池は、例えば図４に示すように、ステンレス鋼製
の方形箱型のケース本体１の上面開口部を同じステンレ
ス鋼製の方形の蓋板２で覆い密閉することにより電池ケ
ースを構成している。非水電解質二次電池の図示しない
発電要素は、この電池ケースのケース本体１内に収容さ
れる。また、この発電要素の正負極には正極端子３と負
極端子４が接続され、これらの正極端子３と負極端子４
の上端部がそれぞれ蓋板２の両側に開口された貫通孔を
通して絶縁封止された状態で外部に突出するようになっ
ている。2. Description of the Related Art A large-capacity non-aqueous electrolyte secondary battery for an electric vehicle is, for example, as shown in FIG. The battery case is formed by covering and sealing with the rectangular cover plate 2. A power generating element (not shown) of the nonaqueous electrolyte secondary battery is housed in the case body 1 of the battery case. A positive terminal 3 and a negative terminal 4 are connected to the positive and negative terminals of the power generating element.
Upper ends of the cover plates 2 are projected through the through holes opened on both sides of the cover plate 2 in a state of being insulated and sealed.
【０００３】上記構成の従来の非水電解質二次電池は、
電池ケースの内部に電解液を注入するために、例えば図
５に示すように、蓋板２の中央部に注液口２ａを形成し
ている。この注液口２ａは、蓋板２の凹部２ｂの中央に
開口している。凹部２ｂは、蓋板２の中央部に形成され
た円形の座ぐりであり、図６に示すように、板厚のほぼ
半分の深さまで窪んで形成されている。注液口２ａは、
この凹部２ｂの底面の中央に開口した、凹部２ｂよりは
十分に径の小さい円形の貫通孔である。The conventional non-aqueous electrolyte secondary battery having the above structure is
In order to inject the electrolyte into the battery case, for example, as shown in FIG. 5, a liquid inlet 2a is formed in the center of the cover plate 2. The liquid inlet 2a is opened at the center of the concave portion 2b of the cover plate 2. The concave portion 2b is a circular counterbore formed in the center of the cover plate 2, and is formed to be recessed to a depth almost half of the plate thickness, as shown in FIG. The injection port 2a is
It is a circular through hole which is opened at the center of the bottom surface of the concave portion 2b and has a sufficiently smaller diameter than the concave portion 2b.
【０００４】この非水電解質二次電池は、上記蓋板２を
ケース本体１の上端開口部に嵌め込んで周囲の接合部を
溶接することにより封止した後に、この蓋板２の注液口
２ａから電解液を注入する。そして、蓋板２の凹部２ｂ
にこれよりわずかに径の小さい円形のステンレス鋼製の
注液栓５を嵌合させて周囲を溶接することにより注液口
２ａを封口していた。In this non-aqueous electrolyte secondary battery, the cover plate 2 is fitted into the upper end opening of the case body 1 and sealed by welding the surrounding joints. An electrolyte is injected from 2a. Then, the concave portion 2b of the lid plate 2
The liquid injection port 2a was sealed by fitting a circular stainless steel liquid injection plug 5 having a slightly smaller diameter than this and welding the periphery.
【０００５】[0005]
【発明が解決しようとする課題】ところが、非水電解質
二次電池の電解液は、揮発性の有機溶媒を用いるので、
この溶媒が常温でも気化し易く、熱を受けると盛んに蒸
発するようになる。However, since the electrolyte of the non-aqueous electrolyte secondary battery uses a volatile organic solvent,
This solvent is easily vaporized even at room temperature, and evaporates vigorously when heated.
【０００６】このため、従来の非水電解質二次電池は、
蓋板２の凹部２ｂに注液栓５を嵌め込んで溶接を行う
と、元々蒸発していた溶媒やこの溶接の際の熱によって
蒸発した溶媒が接合部に付着して溶接不良を起こした
り、溶接の火が蒸発した溶媒に点火して発火するおそれ
があるという問題が生じていた。Therefore, a conventional non-aqueous electrolyte secondary battery is
If the injection plug 5 is fitted into the concave portion 2b of the cover plate 2 and welding is performed, the solvent originally evaporated or the solvent evaporated by the heat at the time of this welding adheres to the joint and causes poor welding. There has been a problem that the welding fire may ignite the evaporated solvent and ignite.
【０００７】また、この問題は、上記非水電解質二次電
池や一次電池の非水電解質電池のように非水電解液を用
いるものに限らず、水溶液電解液を用いた一般の電池の
場合でも同様である。即ち、水溶液電解液の場合にも溶
媒の水が蒸発するので、この水分により溶接不良を起こ
すおそれがあるという問題が生じる。[0007] This problem is not limited to non-aqueous electrolyte batteries such as the above-mentioned non-aqueous electrolyte secondary batteries and non-aqueous electrolyte batteries of primary batteries, but also to general batteries using aqueous solution electrolytes. The same is true. That is, even in the case of the aqueous electrolyte solution, since the water of the solvent evaporates, there is a problem that the moisture may cause poor welding.
【０００８】本発明は、かかる事情に対処するためにな
されたものであり、注液口を注液栓で封口する前にシー
ト材で塞いでおくことにより、電解液が蒸発して溶接の
不良や発火が起きるのを防止することができる電池を提
供することを目的としている。The present invention has been made in order to cope with such a situation. By closing the injection port with a sheet material before sealing the injection port with the injection plug, the electrolytic solution evaporates and defective welding occurs. It is an object of the present invention to provide a battery that can prevent the occurrence of fire or ignition.
【０００９】[0009]
【課題を解決するための手段】請求項１の発明は、発電
要素を収容する金属製の電池ケースに電解液を注入する
ための注液口を形成した電池において、電池ケースの外
側から注液口を覆うようにシート材を接着又は粘着させ
ると共に、電池ケースの外側からこのシート材を覆うよ
うに金属製の注液栓を配置し、この注液栓の周囲を電池
ケースに溶接することにより封口したことを特徴とす
る。According to a first aspect of the present invention, there is provided a battery having a liquid inlet for injecting an electrolytic solution into a metal battery case accommodating a power generating element. By attaching or adhering the sheet material so as to cover the mouth, a metal injection plug is arranged from outside the battery case so as to cover the sheet material, and the periphery of the injection plug is welded to the battery case. It is characterized by being sealed.
【００１０】請求項１の発明によれば、注液口がシート
材で覆われるので、電池ケース内部に注入された電解液
が蒸発して注液栓の接合部に付着するようなことがなく
なり、この電解液の付着による注液栓の溶接不良を防止
することができる。また、電解液が発火性のものであっ
ても、シート材がこの電解液の蒸発を防ぐので、注液栓
の溶接の際に引火するようなおそれがなくなる。特に、
注液栓の溶接の際にはシート材が注液口を確実に塞ぐの
で、この溶接の熱による蒸発を確実に防ぐことができ
る。また、電解液の注液直後にシート材を貼り付けてお
けば、この電解液の常温での蒸発も防ぐことができる。According to the first aspect of the present invention, since the liquid injection port is covered with the sheet material, the electrolyte injected into the battery case does not evaporate and adhere to the joint of the liquid injection plug. In addition, poor welding of the injection plug due to the adhesion of the electrolytic solution can be prevented. Further, even if the electrolytic solution is ignitable, the sheet material prevents the electrolytic solution from evaporating, so that there is no risk of ignition when welding the injection plug. In particular,
At the time of welding the injection plug, the sheet material reliably closes the injection port, so that evaporation due to the heat of this welding can be reliably prevented. Further, if a sheet material is attached immediately after the injection of the electrolyte, evaporation of the electrolyte at room temperature can be prevented.
【００１１】請求項２の発明は、発電要素を収容する金
属製の電池ケ−スに電解液を注入するための注液口を形
成した電池において、電池ケ−スの外側から注液口を覆
うかまたは囲むように薄い弾性部材を配置し、電池ケ−
スの外側からこのシ−ト材を覆うように金属製の注液栓
を配置し、この注液栓の周囲を電池ケ−スに溶接するこ
とにより封口したことを特徴とする。According to a second aspect of the present invention, there is provided a battery having a liquid inlet for injecting an electrolytic solution into a metal battery case accommodating a power generating element, wherein the liquid inlet is provided from outside the battery case. A thin elastic member is arranged to cover or surround the battery case.
A metal injection plug is arranged so as to cover the sheet material from the outside of the case, and the periphery of the injection plug is welded to a battery case to seal the battery case.
【００１２】請求項２の発明によれば、注液口は、シ−
ト材によって仮に封口されるので、電池ケ−ス内部の電
解液が蒸発して、この注入口から外部に漏れ出すような
ことがなくなる。According to the second aspect of the present invention, the injection port is provided with a seal.
Since the sealing material is temporarily closed, the electrolyte in the battery case is prevented from evaporating and leaking from the injection port to the outside.
【００１３】請求項３の発明は、前記電池ケースの外面
に浅い凹部が形成され、注液口がこの凹部のほぼ中央に
開口して形成したものであり、注液栓がこの凹部に嵌合
する形状の金属板であることを特徴とする。According to a third aspect of the present invention, a shallow concave portion is formed on an outer surface of the battery case, and a liquid inlet is formed to be opened substantially at the center of the concave portion. It is characterized in that it is a metal plate having the following shape.
【００１４】請求項３の発明によれば、注液口を封口す
る注液栓が凹部に嵌入するので、この注液栓が電池ケー
スから突出して邪魔になるようなことがなくなる。According to the third aspect of the present invention, since the liquid injection plug for closing the liquid injection port is fitted into the concave portion, the liquid injection plug does not protrude from the battery case and is not obstructed.
【００１５】請求項４の発明は、前記シート材が、合成
樹脂製のシートの裏面に粘着剤を塗布したものであるこ
とを特徴とする。The invention according to claim 4 is characterized in that the sheet material is obtained by applying an adhesive to the back surface of a synthetic resin sheet.
【００１６】請求項４の発明によれば、粘着剤が塗布さ
れた合成樹脂製のシート材を注液口に貼り付けるだけ
で、容易に電解液の蒸発を防ぐことができるようにな
る。According to the fourth aspect of the present invention, the evaporation of the electrolyte can be easily prevented only by sticking the sheet material made of the synthetic resin coated with the adhesive to the liquid inlet.
【００１７】[0017]
【発明の実施の形態】以下、本発明の実施形態について
図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１８】図１〜図３は本発明の一実施形態を示すも
のであって、図１は注液栓組み付け時の非水電解質二次
電池の全体斜視図、図２は蓋板の注液口付近の部分拡大
縦断面図、図３は蓋板の注液口付近の他の構成を示す部
分拡大縦断面図である。なお、図４〜図６に示した従来
例と同様の機能を有する構成部材には同じ番号を付記す
る。FIGS. 1 to 3 show one embodiment of the present invention. FIG. 1 is an overall perspective view of a nonaqueous electrolyte secondary battery when an injection plug is assembled, and FIG. FIG. 3 is a partially enlarged longitudinal sectional view showing another configuration near the liquid inlet of the cover plate. Components having the same functions as those of the conventional example shown in FIGS. 4 to 6 are denoted by the same reference numerals.
【００１９】本実施形態は、従来例と同様の電気自動車
用の大型大容量の非水電解質二次電池について説明す
る。この非水電解質二次電池は、図１に示すように、ス
テンレス鋼製の方形箱型のケース本体１の上面開口部を
同じステンレス鋼製の方形の蓋板２で覆い密閉すること
により電池ケースを構成している。また、この電池ケー
ス内に収納された図示しない発電要素に接続される正極
端子３と負極端子４も、上端部を蓋板２の両側から外部
に突出するようになっている。正極端子３は、上端部に
雄ねじを形成したアルミニウム製の接続部品であり、負
極端子４は、上端部に雄ねじを形成した銅製の接続部品
である。これらの正極端子３と負極端子４は、それぞれ
Ｏリングやエポキシ樹脂製の絶縁材を介して蓋板２の貫
通孔に取り付ける共に、上方に突出した雄ねじにナット
を螺着させることにより、蓋板２に絶縁して封止固定さ
れるようになっている。In this embodiment, a large-capacity non-aqueous electrolyte secondary battery for an electric vehicle similar to the conventional example will be described. As shown in FIG. 1, this non-aqueous electrolyte secondary battery has a battery case by covering the upper opening of a stainless steel rectangular box-shaped case body 1 with the same stainless steel rectangular cover plate 2 and sealing it. Is composed. Also, the positive electrode terminal 3 and the negative electrode terminal 4 connected to the power generation element (not shown) housed in the battery case also have upper ends protruding outside from both sides of the cover plate 2. The positive electrode terminal 3 is an aluminum connection component having an external thread formed at the upper end, and the negative electrode terminal 4 is a copper connection component having an external thread formed at the upper end. The positive electrode terminal 3 and the negative electrode terminal 4 are respectively attached to the through holes of the cover plate 2 via an O-ring or an insulating material made of epoxy resin, and a nut is screwed onto a male screw protruding upward, thereby forming a cover plate. 2, and is sealed and fixed.
【００２０】上記蓋板２には、従来例と同様に、凹部２
ｂと注液口２ａが形成されている。凹部２ｂは、蓋板２
の中央部に形成された円形の座ぐりであり、図２に示す
ように、板厚のほぼ半分の深さまで窪んで形成されてい
る。なお、この凹部２ｂは、図５及び図６に示した従来
例のものよりも大きな径に形成するのが好ましい。注液
口２ａは、この凹部２ｂの中央に開口した円形の貫通孔
であり、凹部２ｂよりは十分に径の小さい従来例と同様
に大きさのものでよい。The cover plate 2 is provided with a recess 2 in the same manner as in the prior art.
b and the liquid inlet 2a are formed. The recess 2b is
Are formed in the center of the circle, and are recessed to a depth of approximately half the plate thickness as shown in FIG. The recess 2b is preferably formed to have a larger diameter than that of the conventional example shown in FIGS. The liquid injection port 2a is a circular through-hole opened at the center of the concave portion 2b, and may have the same size as the conventional example having a sufficiently smaller diameter than the concave portion 2b.
【００２１】上記非水電解質二次電池は、蓋板２とケー
ス本体１を溶接により接合し封止した後に、この蓋板２
の注液口２ａから電解液を注入する。非水電解質二次電
池の電解液は、揮発性の有機溶媒に電解質を加えたもの
であるため、常温でもこの溶媒が気化し易く、熱を受け
ると盛んに蒸発するようになる。In the above nonaqueous electrolyte secondary battery, the lid plate 2 and the case body 1 are joined by welding and sealed, and then the lid plate 2 is sealed.
The electrolyte is injected from the liquid injection port 2a. Since the electrolyte of the non-aqueous electrolyte secondary battery is obtained by adding an electrolyte to a volatile organic solvent, the solvent is easily vaporized even at room temperature, and evaporates vigorously when heated.
【００２２】電解液の注入が完了すると、まずこの注液
口２ａをシート材６で塞ぐ。シート材６は、ポリイミド
樹脂等の耐熱性のある合成樹脂製の円形のシ−ト（暑さ
は、例えば１００μｍ）の裏面に粘着剤を塗布したもの
である。なお、シ−トの材質としては、耐溶媒性、耐熱
性を有しているもき、耐熱性に関しては、好ましくは４
００°Ｃ以上、より好ましくは５００°Ｃ程度の温度ま
で耐熱性を有するものが良い。また、このシ−ト材６
は、注液口２ａよりは十分に大きく、凹部２ｂよりは十
分に小さい径のものを用いる。このシ−ト材６は、粘着
剤を塗布した裏面を下にして蓋板２の上方から凹部２ｂ
の底面中央部に貼り付けることにより、注液口２ａを覆
い塞ぐ。従って、注液口２ａは、シ−ト剤６によって仮
に封口されるので、電池ケ−ス内部の電解液が蒸発し
て、この注液口２ａから外部に漏れ出すようなことがな
くなる。なお、シート材６やこの裏面の粘着剤は、電解
液に直接触れるので、この電解液に溶融して悪影響を与
えないようなものを用いる必要があり、例えば、シリコ
ン系粘着剤、アクリル系粘着剤、ブチルゴム系粘着剤を
用いるのが好ましい。また、シ−ト剤６は弾性を有する
ある程度の厚みを有するシ−トで構成することもでき、
この場合、注液栓５が浮き上がって溶接を阻害しない程
度の薄いものにし、溶接は注液栓５を押さえつけながら
行う。また、このような弾性体部材で構成する場合に
は、粘着剤や接着剤を塗布する必要はなく、また、注液
口２ａの回りを囲っておれば、内部に穴が空いているも
の（極端な例は円環状リング）でも良い。When the injection of the electrolytic solution is completed, first, the injection port 2a is closed with the sheet material 6. The sheet material 6 is obtained by applying a pressure-sensitive adhesive to the back surface of a circular sheet (heat is, for example, 100 μm) made of a heat-resistant synthetic resin such as a polyimide resin. In addition, the material of the sheet has solvent resistance and heat resistance.
Those having heat resistance up to a temperature of 00 ° C. or more, more preferably about 500 ° C. are preferable. In addition, this sheet material 6
Is larger than the liquid inlet 2a and smaller than the recess 2b. The sheet material 6 is provided with the concave portion 2b from above the lid plate 2 with the back surface coated with the adhesive downward.
The liquid injection port 2a is covered and closed by being attached to the center of the bottom surface of the. Accordingly, since the liquid injection port 2a is temporarily closed by the sheet agent 6, the electrolyte in the battery case does not evaporate and leaks out from the liquid injection port 2a to the outside. In addition, since the sheet material 6 and the adhesive on the back surface thereof are in direct contact with the electrolytic solution, it is necessary to use a material which does not melt and have an adverse effect on the electrolytic solution. It is preferable to use a butyl rubber-based adhesive. Further, the sheet agent 6 can be constituted by a sheet having a certain elastic thickness.
In this case, the injection plug 5 is made thin so as not to hinder welding by welding, and welding is performed while pressing the injection plug 5. In the case where such an elastic member is used, there is no need to apply a pressure-sensitive adhesive or an adhesive, and if the periphery of the liquid injection port 2a is surrounded, a hole is formed inside ( An extreme example is an annular ring).
【００２３】上記のようにして注液口２ａがシート材６
で塞がれると、蓋板２の凹部２ｂに注液栓５を嵌め込ん
で周囲を溶接する。注液栓５は、凹部２ｂよりもわずか
に径が小さく、この凹部２ｂの深さとほぼ同じ厚さの円
形のステンレス鋼板である。従って、この注液栓５を凹
部２ｂに嵌め込むと、凹部２ｂの窪みに隙間なく嵌合
し、蓋板２の上面とも面一となる。そして、この注液栓
５の周囲をレーザ溶接等によって全周にわたって溶接し
て凹部２ｂの外縁部に溶着させることにより、凹部２ｂ
の底面に開口する注液口２ａを封口する。As described above, the injection port 2a is
Is closed, the injection plug 5 is fitted into the recess 2b of the cover plate 2 and the periphery is welded. The injection plug 5 is a circular stainless steel plate having a slightly smaller diameter than the concave portion 2b and having a thickness substantially equal to the depth of the concave portion 2b. Therefore, when the liquid injection plug 5 is fitted into the concave portion 2b, the liquid stopper 5 is fitted into the concave portion of the concave portion 2b without any gap, and is flush with the upper surface of the lid plate 2. Then, the periphery of the injection plug 5 is welded over the entire periphery by laser welding or the like and is welded to the outer edge of the concave portion 2b, thereby forming the concave portion 2b.
The liquid injection port 2a opened on the bottom surface of is closed.
【００２４】上記注液栓５の溶接の際には、この溶接の
熱が蓋板２を通して電池ケースの内部に伝わり、電解液
の蒸発が盛んになる。しかし、前述のように、注液口２
ａはシート材６によって仮に封口されているので、この
電解液の蒸気が注液口２ａから外部に漏れ出すようなこ
とがない。シート材６は、この溶接の熱を受けて仮に封
口が剥がれるようなことのないように、ある程度の耐熱
性が必要となる。ただし、注液栓５の溶接後には、この
シート材６が剥がれても、電解液が外部に漏れ出すよう
な心配はない。When the injection plug 5 is welded, the heat of this welding is transmitted to the inside of the battery case through the cover plate 2, and the evaporation of the electrolyte becomes active. However, as described above, the injection port 2
Since “a” is temporarily closed by the sheet material 6, the vapor of the electrolytic solution does not leak out from the injection port 2 a to the outside. The sheet material 6 needs to have a certain degree of heat resistance so that the sealing may not be peeled off by the heat of the welding. However, even after the sheet material 6 is peeled off after welding of the injection plug 5, there is no fear that the electrolyte solution leaks out.
【００２５】上記構成の非水電解質二次電池によれば、
注液栓５の溶接の際に、注液口２ａがシート材６によっ
て封口されるので、電池ケース内部の電解液が蒸発して
この注液口２ａから漏れ出すようなおそれがなくなる。
このため、電解液の蒸気が注液栓５と凹部２ｂの接合部
に付着して溶接が不良になるようなおそれがなくなると
共に、この電解液の蒸気が溶接によって発火するような
おそれもなくなる。特に、電解液を注入した直後にシー
ト材６を貼り付けるようにすれば、溶接時のみならず常
温で気化した電解液が凹部２ｂの底面等に付着するのを
防止できるので、溶接不良を確実に防止できるようにな
る。According to the above-structured non-aqueous electrolyte secondary battery,
When the injection plug 5 is welded, the injection port 2a is sealed by the sheet material 6, so that there is no possibility that the electrolyte in the battery case evaporates and leaks from the injection port 2a.
Therefore, there is no danger that the vapor of the electrolytic solution adheres to the joint between the liquid injection plug 5 and the concave portion 2b to cause poor welding, and there is no possibility that the vapor of the electrolytic solution is ignited by welding. In particular, if the sheet material 6 is adhered immediately after the electrolyte is injected, it is possible to prevent the electrolyte vaporized not only at the time of welding but also at room temperature from adhering to the bottom surface of the concave portion 2b and the like. Can be prevented.
【００２６】なお、上記実施形態では、シート材６とし
て合成樹脂製のシートを用いたが、これに限らず任意の
材質のシートを用いることができる。例えば金属箔を用
いた場合には、合成樹脂に比べて確実な耐熱性を得るこ
とができる。また、このシート材６は、予め裏面に粘着
剤を塗布したものを用いたが、注液口２ａを塞ぐ際にこ
のシート材６や凹部２ｂの底面に粘着剤や接着剤を塗布
するようにしてもよい。ただし、合成樹脂製のシート材
６は、適度な柔軟性を有するので、取り扱い易くなり、
予め粘着剤が塗布されていれば、貼り付け作業が容易と
なる。In the above embodiment, a sheet made of a synthetic resin is used as the sheet material 6, but the present invention is not limited to this, and a sheet of any material can be used. For example, when a metal foil is used, reliable heat resistance can be obtained as compared with a synthetic resin. As the sheet material 6, an adhesive was previously applied to the back surface. However, an adhesive or an adhesive was applied to the bottom of the sheet material 6 or the concave portion 2b when closing the liquid inlet 2a. You may. However, since the sheet material 6 made of a synthetic resin has a moderate flexibility, it becomes easy to handle.
If the adhesive is applied in advance, the attaching operation becomes easy.
【００２７】さらに、上記実施形態では、円形のシート
材６を用いたが、この形状は任意である。また、長尺な
テープ状のシート材６を貼り付け時に順次切断して用い
るようにしてもよい。Further, in the above embodiment, the circular sheet member 6 is used, but the shape is arbitrary. Further, a long tape-shaped sheet material 6 may be sequentially cut and used when pasting.
【００２８】さらに、上記実施形態では、注液栓５を蓋
板２の凹部２ｂに嵌め込んで溶接する場合について説明
したが、この凹部２ｂを形成せずに、例えば図３に示す
ように、蓋板２に直接注液口２ａを開口し、これをシー
ト材６で塞いだ後に注液栓５を押し当てて溶接するよう
にしてもよい。Further, in the above embodiment, the case where the injection plug 5 is fitted into the concave portion 2b of the cover plate 2 and welded is described, but without forming the concave portion 2b, for example, as shown in FIG. The liquid injection port 2a may be directly opened in the cover plate 2 and closed by the sheet material 6, and then the liquid injection stopper 5 may be pressed and welded.
【００２９】さらに、上記実施形態では、非水電解質二
次電池について説明したが、一次電池の非水電解質電池
にも同様に実施することができる。また、水溶液電解液
を用いた電池にも同様に実施可能である。ただし、水溶
液電解液の水分は、非水電解液の有機溶媒に比べて蒸発
し難い。しかも、この水分が蒸発しても、溶接の熱で発
火するようなおそれはない。さらに、電池ケースや注液
栓５の形状や材質についても、上記実施形態には限定さ
れない。Further, in the above embodiment, the non-aqueous electrolyte secondary battery has been described. However, the present invention can be similarly applied to a non-aqueous electrolyte battery as a primary battery. Further, the present invention can be similarly applied to a battery using an aqueous electrolyte solution. However, the water content of the aqueous electrolyte is less likely to evaporate than the organic solvent of the non-aqueous electrolyte. In addition, even if the water evaporates, there is no risk of ignition due to welding heat. Further, the shapes and materials of the battery case and the injection plug 5 are not limited to the above embodiment.
【００３０】[0030]
【発明の効果】以上の説明から明らかなように、本発明
の電池によれば、電解液が蒸発して注液口から出るのを
シート材が防ぐので、注液栓の溶接不良を防止すること
ができる。また、電解液が発火性である場合にも、溶接
の火が引火するのを防止することができる。As is clear from the above description, according to the battery of the present invention, since the sheet material prevents the electrolyte from evaporating and coming out of the injection port, poor welding of the injection plug is prevented. be able to. In addition, even when the electrolytic solution is ignitable, it is possible to prevent the welding fire from igniting.
【図１】本発明の一実施形態を示すものであって、注液
栓組み付け時の非水電解質二次電池の全体斜視図であ
る。FIG. 1, which shows one embodiment of the present invention, is an overall perspective view of a nonaqueous electrolyte secondary battery when a liquid injection stopper is assembled.
【図２】本発明の一実施形態を示すものであって、蓋板
の注液口付近の部分拡大縦断面図である。FIG. 2 shows one embodiment of the present invention, and is a partially enlarged longitudinal sectional view near a liquid inlet of a lid plate.
【図３】本発明の一実施形態を示すものであって、蓋板
の注液口付近の他の構成を示す部分拡大縦断面図であ
る。FIG. 3, showing an embodiment of the present invention, is a partially enlarged longitudinal sectional view showing another configuration near a liquid inlet of a lid plate.
【図４】従来例を示すものであって、非水電解質二次電
池の全体斜視図である。FIG. 4 shows a conventional example, and is an overall perspective view of a nonaqueous electrolyte secondary battery.
【図５】従来例を示すものであって、注液栓組み付け時
の非水電解質二次電池の全体斜視図である。FIG. 5, which shows a conventional example, is an overall perspective view of a nonaqueous electrolyte secondary battery at the time of assembling an injection plug.
【図６】従来例を示すものであって、蓋板の注液口付近
の部分拡大縦断面図である。FIG. 6 is a partially enlarged longitudinal sectional view showing a conventional example, in the vicinity of a liquid inlet of a lid plate.
２ 蓋板 ２ａ 注液口 ２ｂ 凹部 ５ 注液栓 ６ シート材 2 Lid plate 2a Filling port 2b Concave part 5 Filling stopper 6 Sheet material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 杉山 秀幸 京都市南区吉祥院西ノ庄猪之馬場町１番地 日本電池株式会社内 Ｆターム(参考） 5H023 AA03 CC11 CC14 CC27 CC28 5H029 AJ15 BJ02 CJ05 CJ22 EJ01 EJ12 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideyuki Sugiyama 1 Kishijoin Nishinosho Inono Babacho, Minami-ku, Kyoto Japan Nippon Battery Co., Ltd. F-term (reference) 5H023 AA03 CC11 CC14 CC27 CC28 5H029 AJ15 BJ02 CJ05 CJ22 EJ01 EJ12
Claims (4)
に電解液を注入するための注液口を形成した電池におい
て、 電池ケースの外側から注液口を覆うようにシート材を接
着又は粘着させると共に、 電池ケースの外側からこのシート材を覆うように金属製
の注液栓を配置し、この注液栓の周囲を電池ケースに溶
接することにより封口したことを特徴とする電池。1. A battery having a liquid inlet for injecting an electrolytic solution into a metal battery case containing a power generating element, wherein a sheet material is adhered or adhered so as to cover the liquid inlet from the outside of the battery case. A battery, characterized in that a metal injection plug is arranged so as to cover the sheet material from the outside of the battery case, and the periphery of the injection plug is welded to the battery case to seal the battery.
に電解液を注入するための注液口を形成した電池におい
て、電池ケ−スの外側から注液口を覆うかまたは囲むよ
うに薄い弾性部材を配置し、電池ケ−スの外側からこの
シ−ト材を覆うように金属製の注液栓を配置し、この注
液栓の周囲を電池ケ−スに溶接することにより封口した
ことを特徴とする電池。2. A battery having a liquid inlet for injecting an electrolytic solution into a metal battery case accommodating a power generating element, wherein the liquid inlet is covered or surrounded from outside the battery case. A thin elastic member is disposed on the battery case, and a metal injection plug is disposed so as to cover the sheet material from the outside of the battery case, and the periphery of the injection plug is welded to the battery case. A battery characterized by being sealed.
され、注液口がこの凹部のほぼ中央に開口して形成した
ものであり、注液栓がこの凹部に嵌合する形状の金属板
であることを特徴とする請求項１又は請求項２に記載の
電池。3. A metal plate having a shallow concave portion formed on the outer surface of the battery case, a liquid inlet opening formed substantially at the center of the concave portion, and a liquid injection plug fitted into the concave portion. The battery according to claim 1, wherein:
裏面に粘着剤を塗布したものであることを特徴とする請
求項１又は請求項３に記載の電池。4. The battery according to claim 1, wherein the sheet material is obtained by applying an adhesive to a back surface of a synthetic resin sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11018167A JP2000215883A (en) | 1999-01-27 | 1999-01-27 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11018167A JP2000215883A (en) | 1999-01-27 | 1999-01-27 | Battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000215883A true JP2000215883A (en) | 2000-08-04 |
| JP2000215883A5 JP2000215883A5 (en) | 2006-03-09 |
Family
ID=11964063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11018167A Withdrawn JP2000215883A (en) | 1999-01-27 | 1999-01-27 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000215883A (en) |
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1999
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